00195440-05-SG_D-Series_FSE-EN - 第118页

7 Axis Dynamics 7.3 Axis Control Assemblies 7.2.2 Zero Pulse at the Tr ack Signal Encoder 118 Student Guide SIPLACE D-Series (FSE) 7.3 7 . 3 A x is C o n t r o l A s s e m b lie s Axis Control Assemblies The control circ…

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7 Axis Dynamics
7.2.2 Zero Pulse at the Track Signal Encoder 7.2 Position Measuring System
Student Guide SIPLACE D-Series (FSE) 117
Analog and digital zero pulse signal (zero line set at screen center)
Legend
At around 2.5 V the Schmitt trigger circuit issues a brief, high pulse: the zero pulse for the position meas-
urement system. If the encoder has been installed too near to the incremental scale, one of the auxiliary
pulses could exceed the Schmitt trigger threshold and be mistakenly recognized as the zero pulse. This
would mean that the zero pulse would be recognized in the wrong position on the incremental scale. This
would then lead to a placement offset on the SIPLACE machine. The digital zero pulse is measured on
the gantry head distributor, with a probe at Pin 8 of the test connector. The inverted zero pulse can be
measured at the zero pulse output on the axis test box (or the SIPLACE AxisTester SAT).
The A364 axis controller considers all the zero pulses on the track scale i.e. even those which are re-
peated after 50 mm.
7.2.2.1
7.2.2.1 FSE Note
FSE Note
1 The analog zero pulse needs to be 0.3 V
higher than the trigger threshold for the dig-
ital zero pulse.
3 Glitches (signal noise) should not override
the limit 0,3 V less than Trigger threshold!
2 Schmitt trigger threshold
NOTICE
The A364 axis controller detects each X/Y scale zero pulse and checks the count values for
errors.
NOTICE
When using the new 1 field lens incremental encoder, the 'main peak' of the analog zero pulse
must meet the positive intersection point of the analog A/B count signals.
7 Axis Dynamics
7.3 Axis Control Assemblies 7.2.2 Zero Pulse at the Track Signal Encoder
118 Student Guide SIPLACE D-Series (FSE)
7.3
7.3 Axis Control Assemblies
Axis Control Assemblies
The control circuit for control the X- and Y-axis in general consist of the following parts:
▪ Axis board
▪ Servo board (TDS) with braking board
▪ 3-phase AB linear motor (Y-axis)/
3 phase AC (rotation) motor (X-axis)
▪ Measurement system (incremental scale and encoder (read unit))
To protect the motor of the X/Y-axes from overtemperature, these have an internal temperature sensor.
Parts "Axis control"
Legend
1. Axis Board A364
2. Control signals I
target
"W" and I
target
"U"
3. LED‘s on Servo board:
4. 3-phase AC linear motor (Y-axis) or 3-phase servo
motor with integrated temperature sensor.
5. Between motor and incremental encoder exist a fixed
mechanically connection.
6. Incremental encoder: transmit the exact position of
the axis The track signals are the only feedback sig-
nals for the axis control system.
The servo board directly controls the linear motor (inter-
mediate circuit voltage 250 V) or servo motor.
7 Axis Dynamics
7.3.1 Axis Controller 7.3 Axis Control Assemblies
Student Guide SIPLACE D-Series (FSE) 119
7.3.1
7.3.1 Axis Controller
Axis Controller
View and test signals for A364 axis controller of SIPLACE machine
The target position and start signal from the MC are transmitted to the axis controllers, which perform all
necessary calculations and controls.
The axis controller A364 in the SIPLACE machine is slot-coded. This means that no address switch
needs to be set when spare parts are replaced.
The communication and axis control functions are performed by the axis controller.
The corresponding BIOS SW and applications 1 and 2 are responsible for this.
The various drive types (motors) make different entries necessary in the control parameters. This leads
to different firmware versions for the axis types.
7.3.2
7.3.2 Axes on D/Di-Series Machine Types and Head Modularity
Axes on D/Di-Series Machine Types and Head Modularity
D4/D4i DLM Assem.1
PA1
Adr
.
Assem.2
PA1
Adr
.
Assem. 3
PA1
Adr
.
Axis type/gantry X1 0 X4 4 Free 8
Axis type/gantry Y1 1 Y4 5 Free 9 Anti-crash communication
*
1
Axis type/gantry S1 2 S4 6 DP1 10
Axis type/gantry Z1 3 Z4 7 DP4 11
Placement area 2 Assem. 1
PA2
Adr
.
Assem.2
PA2
Adr
.
Assem. 3
PA2
Adr
.
Axis type/gantry X2 16 X3 20 Free 24
Axis type/gantry Y2 17 Y3 21 Free 25 Anti-crash communication
*
1
Axis type/gantry S2 18 S3 22 DP2 26
Axis type/gantry Z2 19 Z3 23 DP3 27